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- <H2>Using Proxy Servers</H2>
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- Many organizations use a <A
- HREF="http://www.cis.ohio-state.edu/hypertext/faq/usenet/firewalls-faq/faq.html">firewall</A>
- (usually a router or a computer) to protect their internal network from external
- access. A <I>proxy server</I> is a program, typically running on a firewall
- machine, that can be configured to block external access, while permitting users
- behind a firewall to access Internet resources.
-
- <P>You can specify a different proxy server for HTTP, gopher, and FTP protocols.
-
- <P><A NAME="PROXY"><B>To setup proxy servers:</B></A>
- <OL>
- <P><LI>From the Edit menu, choose Preferences.
- <P><LI>Choose the Proxies panel, if necessary.
- <P><LI>For each Proxy field, type the domain name (or IP address) and port number
- of the proxy server you are using. See your Internet access provider or system
- administrator for details.<P>
- <P><LI>Choose the OK button.
- </OL>
-
- <P>
-
- <A NAME="BYPASS"><B>To bypass proxy servers:</B></A>
- <P>
- <OL>
- <P><LI>From the Edit menu, choose Preferences.
- <P><LI>In the Bypass Proxy On field, specify the IP addresses, domain
- names, and ports that should be accessed directly without using a
- proxy server. Separate entries with commas. Examples:
-
- <P>
-
- <TABLE>
-
- <TR>
- <TD><B>To directly access</B></TD>
- <TD></TD>
- <TD><B>Enter this</B></TD>
- </TR>
-
- <TR>
- <TD>www.foo.com</TD>
- <TD> </TD>
- <TD>www.foo.com</TD>
- </TR>
-
- <TR>
- <TD>only port 80 of www.foo.com</TD>
- <TD> </TD>
- <TD>www.foo.com:80</TD>
- </TR>
-
- <TR>
- <TD>any machine in the foo.com domain</TD>
- <TD> </TD>
- <TD>foo.com</TD>
- </TR>
-
- <TR>
- <TD>port 80 of any machine</TD>
- <TD> </TD>
- <TD>:80</TD>
- </TR>
-
- <TR>
- <TD>machines inside the foo.com domain and port 80 of any machine</TD>
- <TD> </TD>
- <TD>foo.com, :80</TD>
- </TR>
-
- </TABLE>
-
- <LI>Choose the OK button.
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- </OL>
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